Spam Blocked

Enter HashCash 3.0

Basicly it uses md5, javascript and a bit of AJAX, which is very hard to force except when a spam bot executes the actual javascript.Basicaly it just keeps an “undecipherable” secret which in theory you’d need javascript to decode. The problem with that is that it takes some time to execute the javascript and hopefully will scare the spambot away.

The method isn’t intrusive (although it does require javascript to be turned on), and pretty effective.